136 DB. J. G. DE MAK ON THE PODOPHTHALMOTTS 



external and internal margins being arcuate. The outer surface 

 does not present the W-like figure that characterizes this joint in 

 D. sulcata and B. hrevitarsis, but the internal half appears quite 

 smooth, somewhat as in Scopimera glohosa ; a slight angular de- 

 pression, however, is found on the surface of the merus-joint ante- 

 riorly, the corner of the angle being the anterior tip of the joint 

 and the opening being directed backward ; moreover a piliferous 

 elevated and curved line proceeds from the external angle of the 

 posterior margin of the joint into the angular depression, which 

 I have described. The sternum is smooth, without " tympana." 

 The abdomen of the male perfectly resembles that of _D. sulcata, 

 the anterior margin of the fourth joint being emarginate in the 

 middle and also piliferous ; the second (penultimate) joint is a 

 little more than twice as broad as long and shorter than the 

 rounded terminal joint, the base of which is a little broader than 

 long. 



"With respect to the chelipedes and the ambulatory legs, D. 

 intermedia nearly agrees with _D. sulcata ; but the following dif- 

 ferences may be observed. The fingers of the chelae in _D. inter- 

 media (fig. 5) are comparatively a little longer than those of 

 D. sulcata (fig. 6), being about 21-3 times as long as the palm, 

 in D. sulcata only 1-^ times. The fingers therefore are very 

 slender and gradually taper into an acute point; they are 

 minutely denticulate at the base, somewhat as in Forskal's 

 species. The ambulatory legs fully resemble those of D. sulcata. 

 The meropodites are all provided with " tympana," and those of 

 the last pair have the tympana almost half as long as the joint. 

 The propodites are more distinctly longitudinally grooved on 

 their outer surface than those of D. sulcata : the dactylopodites 

 also resemble those of that species ; those of the last pair of 

 legs, however, are comparatively a little longer, measuring 

 nearly twice the length of the propodites. The legs are some- 

 what hairy. 



This Dotilla is much smaller than the other species, the 

 cephalothorax being only 4-4| millim. broad. 



